CVE-2023-46745: Rate limiting Bypass on login page in libreNMS
First published: Fri Nov 17 2023(Updated: )
### Summary Application is using two login methods and one of them is using GET request for authentication. There is no rate limiting security feature at GET request or backend is not validating that. ### PoC Go to /?username=admin&password=password&submit= Capture request in Burpsuite intruder and add payload marker at password parameter value. Start the attack after adding your password list We have added 74 passwords Check screenshot for more info <img width="1241" alt="Screenshot 2023-11-06 at 8 55 19 PM" src="https://user-images.githubusercontent.com/31764504/280905148-42274f1e-f869-4145-95b4-71c0bffde3a0.png"> ### Impact An attacker can Bruteforce user accounts and using GET request for authentication is not recommended because certain web servers logs all requests in old logs which can also store victim user credentials.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/librenms/librenms | <23.11.0 | 23.11.0 |
| Librenms Librenms | <23.11.0 |
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Reference Links
- https://github.com/librenms/librenms/security/advisories/GHSA-rq42-58qf-v3qx
- https://github.com/librenms/librenms/pull/15558
- https://github.com/librenms/librenms/commit/7c006e96251ae1d32e1a015b361a7bfbb815c028
- https://github.com/librenms/librenms/releases/tag/23.11.0
- https://nvd.nist.gov/vuln/detail/CVE-2023-46745
- https://github.com/advisories/GHSA-rq42-58qf-v3qx (Advisory)
Frequently Asked Questions
What is CVE-2023-46745 about?
CVE-2023-46745 is a vulnerability in the login page of libreNMS that allows bypassing rate limiting by using a GET request for authentication.
How does CVE-2023-46745 work?
This vulnerability occurs because there is no rate limiting security feature in place for the GET request used for authentication.
What is the severity of CVE-2023-46745?
CVE-2023-46745 has a severity score of 5.3, which is considered medium.
How can I fix CVE-2023-46745?
To fix CVE-2023-46745, update to version 23.11.0 of libreNMS, which includes a remedy for this vulnerability.
What CWE categories are associated with CVE-2023-46745?
CVE-2023-46745 is associated with the CWE categories 770 (Allocation of Resources Without Limits or Throttling) and 307 (Improper Restriction of Excessive Authentication Attempts).
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